University of Mohaghegh Ardabili Journal of Research in Psychopathology 2783-3208 Articles in Press 2025 09 30 Comparison of Cognitive and Emotional Functions in Individuals with Borderline and Antisocial Personality Disorders: A Study Based on QEEG 4099 10.22098/jrp.2025.18049.1329 EN Seyyedeh Sahar Asgari Ghalebin PhD student in psychology, University of Mohaghegh Ardabili, Department of Psychology, Ardabil, Iran Sajjad Bashrpour Professor at the University of Mohaghegh Ardabili, Department of Psychology, Ardabil, Iran Niloufar Mikaeili Professor at the University of Mohaghegh Ardabili, Department of Psychology, Ardabil, Iran Nader Hajloo Professor at the University of Mohaghegh Ardabili, Department of Psychology, Ardabil, Iran Fatemeh Gholipour neurologist and psychiatrist at the Jam hospital, Tehran, Iran Journal Article 2025 08 12 Borderline and antisocial personality disorders cause numerous cognitive and emotional problems. This study aimed to compare cognitive and emotional functions in individuals with these disorders. In this cross-sectional study, 30 participants were included: 15 with borderline personality disorder and 15 with antisocial personality disorder. Using QEEG, a 7-minute and 15-second resting-state EEG with closed eyes was recorded from each participant, and three minutes of artifact-free data were analyzed with NeuroGuide software. Participants also completed the Difficulties in Emotion Regulation Scale (DERS). QEEG analysis revealed distinct patterns of brain activity corresponding to the observed differences in cognitive and emotional functions between BPD and ASPD participants. Results showed significant differences (P<0.05) in cognitive and emotional functions such as anxiety, sustained attention, mood, language, memory, mirror neurons, and selective attention, but no significant differences (P>0.05) in addiction reward, ventral attention, default mode, and pain. Executive function differences approached significance. Significant differences also emerged in DERS subscales related to goal-directed behavior, impulse control, lack of emotional awareness, and lack of clarity. Borderline participants showed poorer performance than antisocial participants in most cognitive and emotional skills, except mirror neurons and empathy. Except for emotional non-acceptance and limited access to strategies, the groups differed significantly in other emotion regulation subscales.